I am a developer (mostly C#).Say, I would like to write a game in C#, which is similar to a game (free), on armorgame. Is there any terms or "sort of" that I should know? Because it seems like I can't contact with the game maker. I found some games here that has already been ported to C# (for Windows 8 and Windows Phone 8). I, myself, has written some games, but now yet submitted to the Store. Please help me, give me some advices

You can't copyright game mechanics themselves so I wouldn't worry about that. The biggest legal problem for you if you are adapting a game is the name itself. But I don't think you would have any problems even if you had a very similar name. So this just appears to be something you would do out of courtesy then copyright. I would try to get in contact with the developer but I don't see a problem even if you can't get in contact or he tells you that he doesn't want you to.

We strive to deliver the best gaming experiences... on the internet and on your mobile phone. Play thousands of free online games for kids, get access to free mmorpg games, online rpg games, fun online flash games, and more.